Wrench



H. T. ROBERTS.

WRENCH.

APPLICATION FILED. FEB-7,1920.

1,394,939, Patented Oct. 25, 1921.

UNITED STATES HENRY T. ROBERTS, OF NEW YORK, N. Y.

WRENCH.

Original application filed May 21, 1919, Serial No. 298,612.

T 0 all whom it may concern Be it known that I, HENRY T. ROBERTS,acitizen of the United States, residing at 35 \Varren street, New Yorkcity, in the county of New York and State of New York, have invented anew and useful Improvement in renches, of which the following is aspecifica-tion.

My object is to provide a novel, simple and inexpensive construction ofwrench of the flat-sided type, the parts of which cannot becomeaccidentally disconnected. the wrench of this application beingdisclosed in my pending application for United States Patent Serial No.298,612, filed May 21st, 1919, and of which the present application is adivision.

Referring to the accompanying draw- Figure 1 is a view in side elevationof a wrench constructed in accordance with my invention. Fig. 2 is asimilar view of the two parts forming the handle-portion and stationaryjaw of the wrench, before being united. Fig. 3 is a perspective View ofthe sliding jaw of the wrench; and Fig. 1, a similar view of the nutemployed for shifting the sliding jaw along the shank of the wrench,Figs. 3 and 4' being shown slightly enlarged.

I prefer to form the wrench in accordance -with the preferred embodimentof my invention, by providing the shank portion formed of a flat bar ofsuitable metal, as for example steel, of uniform width, on which I cut athread at one end, the threads being at opposite edges of the bar, asindicated at 6. The part thus provided forms the handle portion of thewrench and is suitably shaped to serve this purpose. The stationary jawof the wrench, this jaw being represented at 7, is formed of a piece offlat metal, such as steel, preferably having a neck portion 8 at whichthis jaw is secured in endwiseabutting relation to the threaded end ofthe handle portion 5 as shown, as by electrically welding these partstogether. The sliding jaw of the wrench is represented at 9 and ispreferably formed with a bifurcated portion presenting arms 10 spacedapart and apertured as represented at 11, at which apertures the jawsurrounds the threaded part 6 of the handle bar 5 and is movable alongthe latter, the arms 10 presenting n opening Specification of LettersPatent.

Patented Oct. 25, 1921.

Divided and this application filed February Serial No. 357,050.

12 therebetween in which a. nut 13 screwing upon the threads 6, islocated, this nut servmg as a means of adjustin the sliding jaw 9 alongthe handle-portion 5 toward and away from the stationary jaw 7.

In the formation of the wrench the sliding aw 9 with the nut 13positioned in the openmg 12, is applied to the threaded end of thehandle-portion 5, the jaw 9 and nut 13 to surround this portion and thenut 13 to en gage the threads 6 thereof, and the piece of metal formingthe stationary jaw 7 then welded in place against the extremity of thethreaded end of the bar-portion 5, as shown in Fig. 1'.

The portion of the metal of the bar 5 at the end of its thread 6, thisportion being indicated at 14, thus forms a stop which prevents the nut13 from unscrewing from the bar 5 at this end of the latter, and the jaw7 forms a stop at the other end of the wrench for preventing the nutfrom unscrewing from the bar at this end thereof, the parts of thewrench thus being prevented from becoming disconnected even when roughlyhandled.

By providing the jaw 9 as shown with one side open between thearm-portions 10, it may be readily made by forging it to shape and thenpunching out, by means of the common punch-press, the openings forreceiving the bar-portion 5, as distinguished from requiring drillingand machining to form the openings through the jaw 9 and thus this partof the wrench may be constructed very economically.

While I have illustrated and described a particular construction ofwrench, I do not wish to be understood as intending to limit it theretoas the same may be variously modified and altered without departing fromthe spirit of my invention.

What I claim as new and desire to secure by Letters Patent is:

A wrench formed of a flat bar of metal with a thread cut on one end at.opposite edges, the end thereof opposite that containinc" said threadsforming a handle-portion presenting a stop-surface at the end of saidthread, a jaw surrounding said bar and shiftable thereon lengthwise ofthe latter and held against rotation thereon by engagement with saidbar, a nut surrounding said bar and engaging said thread, and engagingsaid jaw and operating When rotated to shift said jaw along said bar,and a stationary jaw on the other end of said bar formed of a piece ofmetal of substantially the same thickness as said bar, connected withthe outer threaded end of said bar to oppose said movable jaw, saidstop-surface limiting the movement of said nut along said bar in onedirection the part of the Wrench beyond said threaded portion at theopposite end of the Wrench operating to limit the movement of said nutalong said bar in the opposite direction.

HENRY T. ROBERTS.

